Java Reference
In-Depth Information
34.
There are two types of
import
statements:
specific import
and
wildcard import.
The
specific import specifies a single class in the import statement; the wildcard import
imports all the classes in a package.
35.
Programming errors can be categorized into three types:
syntax errors
,
runtime errors
,
and
logic errors.
Errors that occur during compilation are called syntax errors or
compile errors.
Runtime errors are errors that cause a program to terminate abnor-
mally. Logic errors occur when a program does not perform the way it was intended to.
T
EST
Q
UESTIONS
P
ROGRAMMING
E
XERCISES
Note
Solutions to even-numbered exercises are on the Companion Website. Solutions to
all exercises are on the Instructor Resource Website. The level of difficulty is rated
easy (no star), moderate (
*
), hard (
**
), or challenging (
***
).
level of difficulty
1.1
(
Display three messages
) Write a program that displays
Welcome to Java
,
Welcome to Computer Science
, and
Programming is fun
.
1.2
(
Display five messages
) Write a program that displays
Welcome to Java
five times.
*
1.3
(
Display a pattern
) Write a program that displays the following pattern:
J A V V A
J A A V V A A
J J AAAAA V V AAAAA
J J A A V A A
1.4
(
Print a table
) Write a program that displays the following table:
a a^2 a^3
1 1 1
2 4 8
3 9 27
4 16 64
1.5
(
Compute expressions
) Write a program that displays the result of
9.5
*
4.5
-
2.5
*
3
.
45.5
-
3.5
1.6
(
Summation of a series
) Write a program that displays the result of
1
+
2
+
3
+
4
+
5
+
6
+
7
+
8
+
9.
1.7
(
Approximate
p
)
p
can be computed using the following formula:
1
3
+
1
5
-
1
7
+
1
9
-
1
11
+
c
≤
p =
4
* ¢
1
-
1
3
+
1
5
-
1
7
+
1
9
-
1
11
≤
Write a program that displays the result of
4
* ¢
1
-
1
3
+
1
5
-
1
7
+
1
9
-
1
11
+
1
13
≤
and
4
* ¢
1
-
.
Use
1.0
instead of
1
in your
program.
